 "Townsville" maintained pursuit of "Yuan Tusn" as the ship attempted to escape the Great Barrier Reef, fired several warning shots, and received approval from the Defence Minister to fire directly on the ship before the captain surrendered.During 1982, "Townsville" was one of several "Fremantle"s used to depict the fictional HMAS "Defiance" for filming of the second season of the ABC television series "Patrol Boat".